Mulan was originally released on video February 2, 1999. In some areas of the U.S. the Spanish version is also available. And the Chinese version is available on video! (A short review can be found here.) A "Gold Classic" version was released February 2000 and as far as I know the only difference is the inclusion of the "Reflection" and "True to Your Heart" music videos.
The movie was originally released on DVD November 11, 1999. It included the film in wide-screen and TV format in English, Spanish, and French, the "Reflection" and "True to Your Heart" music videos, and the theatrical trailer for Mulan.
A 2-disc "Special Edition" DVD set will be released on October 26, 2004. According to the Disney website: "...this new 2-Disc Special Edition includes spectacular bonus features for families and collectors -- deleted scenes, all-new music videos, games, and an exclusive sneak peek of the all-new movie MULAN II!"
Feature Presentation - New Digital Transfer
English, Spanish, French, and Mandarin language tracks
Deleted scenes including alternate openings
"Keep 'Em Guessing" - deleted song
Disney Pedia: Mulan's World - Explore the fascinating world of ancient China with your comical host, Mushu
Music videos: "Reflection" with Christina Aguilera, "True to Your Heart" performed by 98 Degrees and Stevie Wonder, and "I'll Make A Man Out Of You," an
all-new music video featuring Jackie Chan
Mulan Fun Facts - Fun-filled trivia about the making of Mulan
Audio commentary with the filmmakers
THE JOURNEY BEGINS - Discovering Mulan, The Ballad Of Hua Mulan, Early Presentation Reels, Early Progression Reels
STORY ARTISTS JOURNEY - Finding Mulan, Storyboard To Film Comparisons
DESIGN - Art, character and color designs, Still Art Galleries, Character Design Galleries
PRODUCTION - Production demonstrations, story sketches, rough animation, clean up animation & effects on two separate scenes, digital production, Digital Dim Sum
MUSIC - Songs Of Mulan, Reflection Music Video in Spanish
INTERNATIONAL MULAN - Mulan's International Journey, multi-language reel, publicity Art Gallery